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52
1x52 2x26 4x13
6x7
52,104,158,210,262,314,368,420,472,520
52 ^
2x26
^
2x13
The number 54 is the smallest number that can be written at the sum of 3 squares in 3 ways.
In the year 54 Apollo’s died.
54 is an Abondant number.